Aidatatang_200zh is a free Chinese Mandarin speech corpus provided by Beijing DataTang Technology Co., Ltd under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License. 
<p>The contents and the corresponding descriptions of the corpus include:
<ul>
	<li>The corpus contains 200 hours of acoustic data, which is mostly mobile recorded data.</li>
	<li>600 speakers from different accent areas in China are invited to participate in the recording.</li>
	<li>The transcription accuracy for each sentence is larger than 98%.</li>
	<li>Recordings are conducted in a quiet indoor environment.</li>
	<li>The database is divided into training set, validation set, and testing set in a ratio of 7: 1: 2.</li>
	<li>Detail information such as speech data coding and speaker information is preserved in the metadata file.</li>
	<li>Segmented transcripts are also provided.</li>
</ul>
<p>The corpus aims to support researchers in speech recognition, machine translation, voiceprint recognition, and other speech-related fields. Therefore, the corpus is totally free for academic use.</p>
<p>Please cite the corpus as “aidatatang_200zh, a free Chinese Mandarin speech corpus by Beijing DataTang Technology Co., Ltd ( www.datatang.com )”.</p>
<p>The corpus is a subset of a much bigger data (<strong>free 1505 hours Chinese Mandarin speech corpus</strong>) set which was recorded in the same environment as this open source data. Please visit our website <a href="http://www.datatang.com">DataTang</a> for more details.</p>
<p>DataTang is a community of creators-of world-changers and future-builders. We're invested in collaborating with a diverse set of voices in the AI world, and are excited about working on large-scale projects. Beyond speech, we're providing multiple resources in image, and text. For more data, please visit <a href="https://www.datatang.com/">[Product]</a>.</p>
<p><strong>CONTACT</strong></p>
<p>
China:
<ul>
	<li>Tel:&nbsp&nbsp(+86) 400-650-6137</li>
	<li>Email:&nbsp&nbspservices@datatang.com</li>
	<li>http://www.datatang.com</li>
</ul>
USA:
<ul>
	<li>Tel:&nbsp&nbsp(+1) 408-769-6223</li>
	<li>Email:&nbsp&nbspGlobalsales@datatang.com</li>
	<li>http://en.datatang.com</li>
</ul>
</p>

